US7277059B2 - Monopole antenna assembly - Google Patents

Monopole antenna assembly Download PDF

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Publication number
US7277059B2
US7277059B2 US10/841,380 US84138004A US7277059B2 US 7277059 B2 US7277059 B2 US 7277059B2 US 84138004 A US84138004 A US 84138004A US 7277059 B2 US7277059 B2 US 7277059B2
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US
United States
Prior art keywords
monopole antenna
connector
antenna assembly
bracket
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US10/841,380
Other versions
US20040222940A1 (en
Inventor
Hsien-Chu Lin
Lung-Sheng Tai
Chia-ming Kuo
Zhen-Da Hung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hon Hai Precision Industry Co Ltd
Original Assignee
Hon Hai Precision Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hon Hai Precision Industry Co Ltd filed Critical Hon Hai Precision Industry Co Ltd
Assigned to HON HAI PRECISION IND. CO., LTD. reassignment HON HAI PRECISION IND. CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HUNG, ZHEN-DA, KUO, CHIA-MING, LIN, HSIEN-CHU, TAI, LUNG-SHENG
Priority to US10/844,772 priority Critical patent/US7061435B2/en
Publication of US20040222940A1 publication Critical patent/US20040222940A1/en
Application granted granted Critical
Publication of US7277059B2 publication Critical patent/US7277059B2/en
Expired - Fee Related legal-status Critical Current
Adjusted expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
    • H01Q1/2275—Supports; Mounting means by structural association with other equipment or articles used with computer equipment associated to expansion card or bus, e.g. in PCMCIA, PC cards, Wireless USB
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/32—Vertical arrangement of element
    • H01Q9/38—Vertical arrangement of element with counterpoise

Definitions

  • the present invention relates to an antenna assembly, and in particular to a monopole antenna assembly employed in an electronic device.
  • WLAN Wireless Local Area Network
  • APs WLAN Access Points
  • U.S. Pat. No. 5,603,630 has disclosed an antenna assembly.
  • This antenna assembly comprises an adaptor 10 , an antenna 35 and a socket 13 .
  • the adaptor 10 comprises an end 11 for electrically and mechanically coupling with a plug 31 of the antenna 35 and a connection means 12 for cooperating with the socket 13 .
  • the antenna 35 electrically couples to a transceiver via the adaptor 10 and the socket 13 .
  • this antenna assembly is not simple enough. Respectively manufacturing the antenna, the adaptor and the socket also result in a complex process.
  • an improved antenna assembly is desired to overcome the above-mentioned disadvantages of the prior art.
  • a primary object of the present invention is to provide a monopole antenna assembly with simple structure for an electronic device.
  • a monopole antenna assembly in accordance with the present invention mounted onto a bracket of an electronic device comprises an electronic connector having a long contact extending outwardly and a plug end.
  • the long contact acts as a radiating element of a monopole antenna.
  • the long contact can be easily obtained by modifying the size of contact in stamping process.
  • the plug end electrically and mechanically cooperates with a socket (such as a female connector) of the electronic device. Thus an electrical path is formed between the monopole antenna and the electrical device via the socket.
  • FIG. 1 is a perspective view of a preferred embodiment of a monopole antenna assembly in accordance with the present invention mounted on a bracket of an electronic device (not shown).
  • FIG. 2 is an enlarged cross-sectional view of an electronic connector of the monopole antenna assembly along line 2 - 2 of FIG. 1 .
  • FIG. 3 is test chart recording for the monopole antenna assembly of FIG. 1 , showing Voltage Standing Wave Ratio (VSWR) as a function of frequency.
  • VSWR Voltage Standing Wave Ratio
  • FIG. 4 is a recording of a horizontally polarized principle plane radiation pattern in X-Y plane of the monopole antenna assembly of FIG. 1 operating at a frequency of 2.5 GHz.
  • FIG. 5 is a recording of a vertically polarized principle plane radiation pattern in X-Y plane of the monopole antenna assembly of FIG. 1 operating at a frequency of 2.5 GHz.
  • FIG. 6 is a recording of a horizontally polarized principle plane radiation pattern in Y-Z plane of the monopole antenna assembly of FIG. 1 operating at a frequency of 2.5 GHz.
  • FIG. 7 is a recording of a vertically polarized principle plane radiation pattern in Y-Z plane of the monopole antenna assembly of FIG. 1 operating at a frequency of 2.5 GHz.
  • a monopole antenna assembly comprises an electronic connector 1 assembled on a bracket 2 of an electronic device (not shown).
  • the electronic connector 1 comprises a metal shield 10 divided into an upper portion 103 and a lower portion 102 by a baffle 101 , a dielectric housing 11 received in the upper portion 103 , a receiving room or mating port 105 defined in the lower portion 102 and a long contact 12 getting through the receiving room 105 .
  • Four mounting legs 104 are parallel to the long contact 12 and respectively set on four corners of a top surface of the upper portion 103 .
  • the long contact 12 comprises a plug end 121 received in the receiving room 105 for complementarily engaging with another electronic connector (not show) of the electronic device, a retaining part 122 surrounded by the dielectric housing 11 and a main radiating branch 123 protruding a predetermined distance from the upper portion 103 .
  • a pair of barbs 124 protrude from the surface of the retaining portion 122 and are fully inserted into the dielectric housing 11 .
  • the bracket 2 is a metal sheet mounted on a panel of the electronic device (such as a desktop computer).
  • the bracket 2 comprises a hole 21 and a mounting portion 22 for mounting the bracket 2 onto the electronic device.
  • the monopole antenna assembly gets through the hole 21 with a part of the electronic connector 1 below a bottom surface of the bracket 2 and another part above a top surface of the bracket 2 .
  • the shield 10 of the electronic connector 1 is soldered to the bracket 2 .
  • the radiating branch 123 is perpendicular to the bracket 2 to achieve a better radiating pattern.
  • the electronic connector 1 is a male connector for engaging with a female connector (not shown) of a feeder cable assembly (not shown).
  • the feeder cable has a signal line making electrical connection with the contact 12 through the contacts of the male and female connectors.
  • the feeder cable also has a ground line founding an grounding connection path between the shields of the male and female connectors and the bracket 2 .
  • the radiating branch 123 the shield 10 and the feeder cable form a monopole antenna.
  • the shield 10 is soldered onto the bracket 2 to obtain a larger grounding area for the monopole antenna.
  • this monopole antenna assembly is just an electronic connector having a long radiating branch 123 of the contact 12 and an adaptor portion for engaging with a female connector.
  • this monopole antenna assembly is easily manufactured only by modifying the size of the contact of the electronic connector in stamping process.
  • the radiating branch 123 may be embodied into other configuration such as helix.
  • FIG. 3 shows a test chart recording of Voltage Standing Wave Ratio (VSWR) of the monopole antenna assembly as a function of frequency. Note that VSWR drops below the desirable maximum value “2” in the 2.38-2.5 GHz frequency band, indicating acceptably efficient operation in the frequency band.
  • VSWR Voltage Standing Wave Ratio
  • FIGS. 4-7 show horizontally and vertically polarized principle plane radiation patterns of the monopole antenna assembly operating at frequencies of 2.5 GHz. Note that each radiation pattern is close to a corresponding optimal radiation pattern and there is no obvious radiating blind area.

Abstract

A monopole antenna assembly mounted onto a bracket (2) of an electronic device includes an electronic connector (1) having a long contact (12) extending outwardly. The long contact acts as a radiating element of a monopole antenna. The long contact can be easily obtained by modifying the size of contact in stamping process. The connector electrically and mechanically cooperates with a socket, such as a female connector, of the electronic device. Thus an electrical path is formed between the monopole antenna and the electrical device via connector and the socket.

Description

CROSS-REFERENCE TO RELATED APPLICATION
The present application is related to a U.S. patent application entitled “MONOPOLE ANTENNA ASSEMBLY”, having an unknown serial number, contemporaneously filed and assigned to the common assignee.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an antenna assembly, and in particular to a monopole antenna assembly employed in an electronic device.
2. Description of the Prior Art or Related Art
Today some products applied in Wireless Local Area Network (WLAN), such as WLAN Cards for desktop or laptop computer and WLAN Access Points (APs) under IEEE802.1a/b standards have been introduced into the market. These communication devices benefit from external antennas or internal antennas. In order to fully utilize the space of the laptop computer, the internal antenna is mostly adopted to be assembled into a hinge or a backplane of a liquid crystal display of the laptop computer. But for the desktop computer, the efficient of utilizing space is not very important. So a simple antenna assembly with a perfect radiating pattern is especially important.
U.S. Pat. No. 5,603,630 has disclosed an antenna assembly. This antenna assembly comprises an adaptor 10, an antenna 35 and a socket 13. The adaptor 10 comprises an end 11 for electrically and mechanically coupling with a plug 31 of the antenna 35 and a connection means 12 for cooperating with the socket 13. The antenna 35 electrically couples to a transceiver via the adaptor 10 and the socket 13. However, this antenna assembly is not simple enough. Respectively manufacturing the antenna, the adaptor and the socket also result in a complex process.
Hence, an improved antenna assembly is desired to overcome the above-mentioned disadvantages of the prior art.
BRIEF SUMMARY OF THE INVENTION
A primary object of the present invention is to provide a monopole antenna assembly with simple structure for an electronic device.
A monopole antenna assembly in accordance with the present invention mounted onto a bracket of an electronic device comprises an electronic connector having a long contact extending outwardly and a plug end. The long contact acts as a radiating element of a monopole antenna. The long contact can be easily obtained by modifying the size of contact in stamping process. The plug end electrically and mechanically cooperates with a socket (such as a female connector) of the electronic device. Thus an electrical path is formed between the monopole antenna and the electrical device via the socket.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description of a preferred embodiment when taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a preferred embodiment of a monopole antenna assembly in accordance with the present invention mounted on a bracket of an electronic device (not shown).
FIG. 2 is an enlarged cross-sectional view of an electronic connector of the monopole antenna assembly along line 2-2 of FIG. 1.
FIG. 3 is test chart recording for the monopole antenna assembly of FIG. 1, showing Voltage Standing Wave Ratio (VSWR) as a function of frequency.
FIG. 4 is a recording of a horizontally polarized principle plane radiation pattern in X-Y plane of the monopole antenna assembly of FIG. 1 operating at a frequency of 2.5 GHz.
FIG. 5 is a recording of a vertically polarized principle plane radiation pattern in X-Y plane of the monopole antenna assembly of FIG. 1 operating at a frequency of 2.5 GHz.
FIG. 6 is a recording of a horizontally polarized principle plane radiation pattern in Y-Z plane of the monopole antenna assembly of FIG. 1 operating at a frequency of 2.5 GHz.
FIG. 7 is a recording of a vertically polarized principle plane radiation pattern in Y-Z plane of the monopole antenna assembly of FIG. 1 operating at a frequency of 2.5 GHz.
 DETAILED DESCRIPTION OF THE INVENTION
Reference will now be made in detail to a preferred embodiment of the present invention.
Referring to FIG. 1, a monopole antenna assembly comprises an electronic connector 1 assembled on a bracket 2 of an electronic device (not shown).
Referring to FIG. 1 and FIG. 2, The electronic connector 1 comprises a metal shield 10 divided into an upper portion 103 and a lower portion 102 by a baffle 101, a dielectric housing 11 received in the upper portion 103, a receiving room or mating port 105 defined in the lower portion 102 and a long contact 12 getting through the receiving room 105. Four mounting legs 104 are parallel to the long contact 12 and respectively set on four corners of a top surface of the upper portion 103. The long contact 12 comprises a plug end 121 received in the receiving room 105 for complementarily engaging with another electronic connector (not show) of the electronic device, a retaining part 122 surrounded by the dielectric housing 11 and a main radiating branch 123 protruding a predetermined distance from the upper portion 103. A pair of barbs 124 protrude from the surface of the retaining portion 122 and are fully inserted into the dielectric housing 11.
The bracket 2 is a metal sheet mounted on a panel of the electronic device (such as a desktop computer). The bracket 2 comprises a hole 21 and a mounting portion 22 for mounting the bracket 2 onto the electronic device. The monopole antenna assembly gets through the hole 21 with a part of the electronic connector 1 below a bottom surface of the bracket 2 and another part above a top surface of the bracket 2. The shield 10 of the electronic connector 1 is soldered to the bracket 2.
The radiating branch 123 is perpendicular to the bracket 2 to achieve a better radiating pattern. In this embodiment, the electronic connector 1 is a male connector for engaging with a female connector (not shown) of a feeder cable assembly (not shown). The feeder cable has a signal line making electrical connection with the contact 12 through the contacts of the male and female connectors. The feeder cable also has a ground line founding an grounding connection path between the shields of the male and female connectors and the bracket 2. Thus the radiating branch 123 the shield 10 and the feeder cable form a monopole antenna. The shield 10 is soldered onto the bracket 2 to obtain a larger grounding area for the monopole antenna.
In fact, this monopole antenna assembly is just an electronic connector having a long radiating branch 123 of the contact 12 and an adaptor portion for engaging with a female connector. Thus this monopole antenna assembly is easily manufactured only by modifying the size of the contact of the electronic connector in stamping process.
In some case, the radiating branch 123 may be embodied into other configuration such as helix.
FIG. 3 shows a test chart recording of Voltage Standing Wave Ratio (VSWR) of the monopole antenna assembly as a function of frequency. Note that VSWR drops below the desirable maximum value “2” in the 2.38-2.5 GHz frequency band, indicating acceptably efficient operation in the frequency band.
FIGS. 4-7 show horizontally and vertically polarized principle plane radiation patterns of the monopole antenna assembly operating at frequencies of 2.5 GHz. Note that each radiation pattern is close to a corresponding optimal radiation pattern and there is no obvious radiating blind area.
It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.

Claims (1)

1. A monopole antenna assembly for mounting on a bracket of an electronic device, comprising an electronic connector mounted on the bracket, the connector comprising a shield, a dielectric housing surrounded by the shield and a contact fixed in the housing, the contact comprising a long radiating branch extending outwardly a predetermined distance from the housing; wherein
the shield is soldered onto the bracket; wherein
the shield of the male connector acts as a ground portion; wherein
the electronic connector comprises an upper portion for receiving the dielectric housing and a lower portion for engaging with a female connector of the electronic device; wherein
the contact comprises a retaining portion retained in the housing and a plug end received in the lower portion; wherein
the retaining portion comprises a pair of barbs protruding into the housing.
US10/841,380 2003-05-07 2004-05-07 Monopole antenna assembly Expired - Fee Related US7277059B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/844,772 US7061435B2 (en) 2003-05-09 2004-05-12 Monopole antenna assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW92208373 2003-05-07
TW092208373U TW568368U (en) 2003-05-07 2003-05-07 Connector-type antenna

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/844,772 Continuation-In-Part US7061435B2 (en) 2003-05-09 2004-05-12 Monopole antenna assembly

Publications (2)

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US20040222940A1 US20040222940A1 (en) 2004-11-11
US7277059B2 true US7277059B2 (en) 2007-10-02

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9425516B2 (en) 2012-07-06 2016-08-23 The Ohio State University Compact dual band GNSS antenna design
US20160365634A1 (en) * 2015-06-15 2016-12-15 The Boeing Company Liquid crystal filled antenna assembly, system, and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9306272B2 (en) * 2011-04-22 2016-04-05 Volvo Construction Equipment Ab Device for fixing a satellite antenna for construction equipment
CN102790322A (en) * 2012-08-17 2012-11-21 广东欧珀移动通信有限公司 Earphone socket with antenna

Citations (14)

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Publication number Priority date Publication date Assignee Title
US3509570A (en) * 1968-09-30 1970-04-28 Nasa Flexible blade antenna
US5015194A (en) * 1989-03-17 1991-05-14 Seas James A Connector for antennas and coaxial cable
US5654740A (en) * 1996-08-23 1997-08-05 Pavlo Bobrek Portable computer integrated power supply and pointing device
US5913174A (en) * 1996-06-19 1999-06-15 Proxim, Inc. Connectorized antenna for wireless LAN PCMCIA card radios
US5936581A (en) * 1997-03-03 1999-08-10 Motorola, Inc. Radio frequency switch assembly
US6188918B1 (en) * 1995-01-04 2001-02-13 Centurion International, Inc. Removably mounted retractable 1/2 wave antenna with integral matching section
US6236574B1 (en) * 1996-08-13 2001-05-22 Samsung Electronics Co., Ltd. Sub printed circuit board fixing device in electronic products
US6331838B1 (en) * 2000-07-19 2001-12-18 Delphi Technologies, Inc. Flexible vehicle antenna
US20020015000A1 (en) * 1996-07-02 2002-02-07 Reece John Kenneth Folded mono-bow antennas and antenna systems for use in cellular and other wireless communications systems
US6356237B1 (en) * 1998-06-17 2002-03-12 Young Joon Kim Antenna for mobile communications
US6473043B1 (en) * 2001-04-17 2002-10-29 Hon Hai Precision Ind. Co., Ltd. Antenna assembly
US20040108960A1 (en) * 2002-12-10 2004-06-10 Kuo Chia-Ming Slot bracket antenna
US20040233121A1 (en) * 2003-05-09 2004-11-25 Hsien-Chu Lin Monopole antenna assembly
US20050017912A1 (en) * 2003-04-15 2005-01-27 Alain Azoulay Dual-access monopole antenna assembly

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3509570A (en) * 1968-09-30 1970-04-28 Nasa Flexible blade antenna
US5015194A (en) * 1989-03-17 1991-05-14 Seas James A Connector for antennas and coaxial cable
US6188918B1 (en) * 1995-01-04 2001-02-13 Centurion International, Inc. Removably mounted retractable 1/2 wave antenna with integral matching section
US5913174A (en) * 1996-06-19 1999-06-15 Proxim, Inc. Connectorized antenna for wireless LAN PCMCIA card radios
US20020015000A1 (en) * 1996-07-02 2002-02-07 Reece John Kenneth Folded mono-bow antennas and antenna systems for use in cellular and other wireless communications systems
US6236574B1 (en) * 1996-08-13 2001-05-22 Samsung Electronics Co., Ltd. Sub printed circuit board fixing device in electronic products
US5654740A (en) * 1996-08-23 1997-08-05 Pavlo Bobrek Portable computer integrated power supply and pointing device
US5936581A (en) * 1997-03-03 1999-08-10 Motorola, Inc. Radio frequency switch assembly
US6356237B1 (en) * 1998-06-17 2002-03-12 Young Joon Kim Antenna for mobile communications
US6331838B1 (en) * 2000-07-19 2001-12-18 Delphi Technologies, Inc. Flexible vehicle antenna
US6473043B1 (en) * 2001-04-17 2002-10-29 Hon Hai Precision Ind. Co., Ltd. Antenna assembly
US20040108960A1 (en) * 2002-12-10 2004-06-10 Kuo Chia-Ming Slot bracket antenna
US20050017912A1 (en) * 2003-04-15 2005-01-27 Alain Azoulay Dual-access monopole antenna assembly
US20040233121A1 (en) * 2003-05-09 2004-11-25 Hsien-Chu Lin Monopole antenna assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9425516B2 (en) 2012-07-06 2016-08-23 The Ohio State University Compact dual band GNSS antenna design
US20160365634A1 (en) * 2015-06-15 2016-12-15 The Boeing Company Liquid crystal filled antenna assembly, system, and method
US9553364B2 (en) * 2015-06-15 2017-01-24 The Boeing Company Liquid crystal filled antenna assembly, system, and method

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Publication number Publication date
TW568368U (en) 2003-12-21
US20040222940A1 (en) 2004-11-11

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AS Assignment

Owner name: HON HAI PRECISION IND. CO., LTD., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LIN, HSIEN-CHU;TAI, LUNG-SHENG;KUO, CHIA-MING;AND OTHERS;REEL/FRAME:015314/0195

Effective date: 20030730

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20111002